The cost of 18 pens and 12 scissors is Rs. 756. What is is the cost of 6 pens and 4 scissors?ARs. 252BRs. 189CRs. 378DCannnot be determinedAnswer: A. Rs. 252Read Explanation:Let the C.P of 1 pen be Rs. x and that of 1 scissor be Rs. y . 18x+12y=75618x +12y = 756 18x+12y=756Dividing both sides by 3. 18x3+12y3=7563\frac{18x}{3}+\frac{12y}{3}=\frac{756}{3}318x+312y=37566x+4y=2526x+4y=2526x+4y=252Cost of 6 pen and 4 scissors is 252 Rs. Open explanation in App